Ventilator



Dec. 2s, 192e. 1*,61L934 y R. T. MERRILL VENTILATOR Filed May 1, 1922WITNESS ES M'Qmf- 062km@ Patented Dee. 28, 19261.

ROBERT T. MERRILL, 'QF MILVTAUKEE, WISCNSIN.

VENTLATOR.

Application filed May 1,

vciently handle the large volumes of gases carried through the conduits.

A i'urther object of the invention is to provide a ventilator which maybe made of any desired length.

With the above and other objects in view the invention consists in theventilator as herein claimed and all equivalents.

In the accompanying drawings: 1 is a side view oit a device embodyingthe invention, parts being broken away and parts being shown in section;Fig. 2 is a section taken on the line 2-2 of: Fig. 1.

in the drawings the numeral 3 indicates a drai't tube or pipe which maybe connected up to a ventilator tube i in the ordinary way, the upperend 5 of said draft tube being preferably lared outwardly.

i downwardly flaring prismoidal deflector 6 and a downwardly Haringprismoidal deiiector 7, in which the sides are generally.

longer than the ends, are connected together in spaced relation byvertically disposed parallel partitions 8 at the ends and verticallydisposed parallel partitions 9 at the sides. rihe partitions 8 and 9each have angled portions 10 riveted to the tube, angled portions 11riveted to the deflector 6 and angled portions 12 riveted to thedeflector 7. The detlector 6 is spaced a short distance from the drafttube to forni channels 13 so that air currents striking the sides of thedraft tube below the lower detlector 6 will be directed upwardly and addtheir force to the air currents entering between the deiiectors 6 and 7.The pitch of defiector 6 is greater than that of defiector 7 to formconverging channels so that the velocity of the air in creases as itpasses through the space between said deflectors toward the axis of thetube.

The partitions 9 have extensions 14C provided with fianged portions 15riveted to a vertically disposed deflector plate 16 which extendslengthwise of the tube i and is suspended centrally thereof by itsattachment to said extensions 14. The extensions 14: of the partitions 9and the plate 16 at the upper end of the tube 3 prevent the possibilityof crossdrafts by breaking them up and directing them upwardly. Thepartitions 8 have extensions 17 secured to the extensions 14 of- 1922.Serial No. '22751.

those partitions 9 which are located adjacent the ends of the tube, inthe way that the extensions 11i are secured to the plate 16. Adownwardly flaring prismoidal defiector 18 and the detlector 7 areconnected together in spaced relation by vertically dis-V posed parallelside partitions 19 and vertically disposed end partitions Q9, the sidepartitions 19 having overlapping extensions 91 riveted together and eachend partition 2O having an extension 22 extending through a notch 28formed between 'the adjacentside partitions 19. rhe extensions 21 of theside partitions 19 preferably entend below the upper edges o't thepartitions dk and the plate 1G which has notches cut therein :ter thispurpose. Vrhcse extensions 21 prevent the possibility oit cross-draftsor currents by breaking them up and directing them upwardly. rihe pitchof the detlector 7 is greater than that oic the dci'iector 18 to formconverging channels so that' the velocity of the air increases as itpasses through the space between said deriectors toward the axis of thetube. The partitions 19 and 20 have flanged portions 25 riveted to thedeilectors 7 and 18.

A downwardly flaring ridged cap 26, shaped like a hip root, is mountedabove and spaced from the dei'iector 18 by parallel side partitions 27and end partitions 28 which have flanged portions riveted to said capand the detlector 18. The partitions 27 have extensions 29 joinedtogether at their ends, as by riveting, and serving to break upcross-currents. The sid-e partitions 9, 19, and 27, in each set, arelaterally offset with respect to those in adjacent sets, thereby formingetective baliies for the re-direction of cross currents upwardly andlaterally, according to their position, without interfering with theeduction flow of vitiated air at the leeward end of the ventilator. lnthe case of partitions 9and 19 this offset relation permits the innerextensions ot' the partitions 19 to project downwardly below the upperedges of the partitions 9, thereby securing an improved battling eii'ectat this level. The pitch of the deflector 18 is greater than theslopesof the cap 26 to form converging channels so that the velocity ofthe air in` creases as it passes through the space between saiddeiiector and cap toward the axis of the tube. The upper openings of thedeiiectors progressively decrease in area toward the cap 26 to form aconverging passage. The general courses of the air currents through thedevice are indicated. by arrows in Fig. 2. rlhis 'torni ot ventilatorprovides a siniple and eticient construction for handling,` largijevolumes ot air.

*What claiin as niy invention is:

l.. In a ventilator, the combination, with a draft tubeot oblongrectangular section, ot' a series ot spaced downwardly flaringprisinoidal detiectors at the outer end of the tube, a downwardlyflaring cap above the upper detiector, spaced partitions mounting saiddetlectors and cap in vertically spaced relation, soine oit saidpartitions forming vertical deiiectors extending' across the space abovethe 'tube to define a plurality ot parallel transverse air passages, theseveral partitions forming the transverse passages being laterallyott-set with respect to those torniing the vertically adjacenttransverse passages, and a vertically-disposed deliector extendinglongitudinally above the dra'iit tube and supported from soine of saidpartitions.

2. ln a ventilator, the combination, with a draft tube having anelongated discharge opening, or a plurality of elongated downwardlyflaring` detlectors disposed at the outer end ot' said draft tube, adownwardly flaring cap above the upper detlector, spaced partitionsmounting said detlectors and cap in vertically Vspaced relation and snneot the said partitions forming substantially parallel deflect-orsextending` transversely across the space above the draft tube to definea plurality ot transverse air passages, said transversedeiiector-spacing` partitions in one set ieing' laterally oilset fromthose in the vertically adjacent set and the lower edges ot one set or'partitions projecting' below the upper edges of the subjacent set oipartitions with passages between thein, and a detlector extendinglongitudinally oi the discharge opening?,` ot the draft tube.

3. In a ventilator, the combination, with a dra-'ft tube, of a series ofdownwardly flaring prisinoidal deflectors at the upper end of the tube,vertical partitions spacing adjacent detlectors and connecting theretogether to torni air passages therewith, the several partitions formingtlie transverse passages being oliiset with respect to those forming thevertically adjacent transverse passages, seine et' said partitionsforming` vertical deilect-ors extending across the space above the tube,a longitudinally ei/:tending vertically disposed detlector suspendedtroni some et said partitions, a downwardly flaring cap ndinglongitudinally above the upper desertor, and vertical partit-ionsmounting said cap in spaced relation to said upper del'lector, thetransverse partitions between 'p cap and upper detlector being laterallyit troni the partitions forming the sab- "ent air passages,

. ln a ventilator, the combination, with ttt tube, a series ofdownwardly l' 'if' prisinoidal detlectors at the upper end ci' f tube,vertical partitions spacing addetlectors and connecting thein toto torniair passages therewith, the

partitions forming `the transverse being oli'set with respect to those.1'

roi-naine` the vertically adjacent transverse passages, seine or" saidpartitions forming vertical detlectors extending across the space abovethe tube and downwardly below the pper edge oit the subjacent deflecter,1'oni"udinall`y extending vertically disposed etlector suspended tronisoine ot said pari ions, a downwardly Haring cap extending ongitudinallyabove the upper deflector, and 'ertical partitions mounting said cap in4paced relation to said upper deliector, the ransverse partitionsbetween said cap and .pper detlector being` joined at their inner Vndsand laterally offset from the partitions '-orining the subjacent airpassages.

ln testimony whereof, az; my signature.

nonna-r r. MERRILL.

